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CBI Publishing , 1981
Buku Teks
Davies, Jack, author
West Publishing, 1975
Buku Teks
Hasibuan, H.D. Effendy, author
Program Pascasarjana Universitas Indonesia, 2003
Buku Teks
Wood, William
Percival Marshall, 1949
Buku Teks
editor, Douglas W. Wyatt
American Bar Association, 1984
Buku Teks